WorksheetsAquatic Ecology
Total questions: 21
Worksheet time: 18mins
Name
Class
Date
1.
Microscopic, free-floating, autotrophic organisms that function as producers in aquatic ecosystems are called...
a)
plankton
b)
zooplankton
c)
phytoplankton
d)
bacteria
2.
Aquatic insects or other small organisms that have no backbone and are large enough to be seen without a microscope are called...
a)
bacteria
b)
zooplankton
c)
benthic macrovertebrates
d)
benthic macroinvertebrates
3.
Pollutants discharged from a single identifiable location (e.g., pipes, ditches, channels, sewers, tunnels, containers of various types).
a)
point source pollution
b)
stormwater runoff
c)
nonpoint source pollution
d)
thermal pollution
4.
Water pollution that does not have a specific point of origin is called ...
a)
point source pollution
b)
non point source pollution
c)
thermal pollution
d)
inorganic pollution
5.
Water that drains into a water source after a rain storm occurs. This is the number one cause of non point source pollution in Pennsylvania.
a)
thermal pollution
b)
point source pollution
c)
inorganic pollution
d)
storm water runoff
6.
An immediate increase in the amount of algae and other producers that results from a large input of nutrients is called...
a)
plant growth
b)
algal bloom
c)
phytoplankton growth
d)
aquatic bloom
7.
Overnourishment of aquatic ecosystems with plant nutrients (mostly nitrates and phosphates) because of human activities such as agriculture, urbanization, and discharges from industrial plants and sewage treatment plants.
a)
algal bloom
b)
cultural eutrophication
c)
oligotrophic
d)
littoral zone
8.
A measure of the buffering capacity of water
a)
acidity
b)
limnology
c)
limnetic
d)
alkalinity
9.
A habitat in which the fresh water of a river meets the salt water of the ocean.
a)
estuary
b)
swamp
c)
marsh
d)
fen
10.
What does water in the atmosphere react with to create carbonic acid?
a)
oxygen
b)
nitrogen
c)
phosphorous
d)
carbon dioxide
11.
In which biome do these plants (phytoplankton) not survive?
a)
freshwater
b)
coral reef
c)
ocean
d)
desert
12.
This biome occurs in topical waters near coasts, where water is warm, salty, and shallow:
a)
coral reef
b)
wetland
c)
freshwater
d)
ocean
13.
Headwaters are located in the
a)
mountains
b)
between mountains and coast
c)
where fresh water meets salt water
14.
Which is NOT a freshwater wetland?
a)
estuary
b)
marsh
c)
bog
d)
swamp
15.
Estuaries form where
a)
a lake evaporates
b)
a river meets the sea
c)
a river becomes dammed
d)
a wetland becomes filled in
16.
In which biome do these plants (seagrass) survive?
a)
wetland
b)
ocean
c)
freshwater
17.
Important limiting factors in streams and rivers include
a)
amount of oxygen
b)
temperature of water
c)
all of the above
18.
The aphotic zone is
a)
the ocean's dark lower layer where photosynthesis cannot occur
b)
the sunlit upper layer of the ocean where photosynthesis occurs
c)
on the bottom of lakes, streams, and oceans.
d)
where benthos are found
19.
The photic zone
a)
extends to the bottom of the open ocean
b)
extends to a depth of about 200 meters
c)
is deep, cold, and permanently dark
d)
is where chemosynthetic bacteria are the producers
20.
zooplankton are
a)
tiny autotrophic organisms in water
b)
large plants
c)
tiny heterotrophic organisms in water
d)
large animals
21.
phytoplankton are
a)
tiny autotrophic organisms in water
b)
large plants
c)
tiny heterotrophic organisms in water
d)
large animals
100 %
